WCAG 2.1 AA: 5 Accessibility Mistakes in 2026

In our increasingly digital world, creating truly accessible technology isn’t just about compliance; it’s about building better products for everyone. Many common mistakes are surprisingly easy to avoid, yet they often trip up even seasoned developers and designers, excluding millions of potential users. Are you inadvertently putting up barriers for people who simply want to engage with your digital offerings?

1. Neglecting Image Alternative Text (Alt Text)

One of the most frequent and easily fixable accessibility blunders is overlooking proper alt text for images. Screen readers rely on this text to describe visual content to users who cannot see the image. Without it, images become invisible barriers, not informative elements.

Pro Tip: Think of alt text as a concise, descriptive sentence that conveys the essential information or function of the image. If an image is purely decorative and adds no information, use an empty alt attribute (alt="") to signal to screen readers that it can be skipped. Don’t omit the alt attribute entirely; that’s a different problem.

Common Mistake: Using keywords instead of descriptions, or simply repeating the image file name. For example, <img src="red-widget-product.jpg" alt="red-widget-product"> is unhelpful. A better example would be <img src="red-widget-product.jpg" alt="A sleek, ergonomic red widget with silver buttons on a white background">.

Screenshot Description: Imagine a screenshot from a content management system’s image upload interface, showing a text field labeled “Alternative Text” with a placeholder example: “A group of diverse professionals collaborating around a conference table.” Below it, a checkbox might be labeled “Mark image as decorative.”

2. Ignoring Semantic HTML Structure

Modern web development often prioritizes visual design, but how your page is structured beneath the surface is paramount for accessibility. Using semantic HTML5 elements like <header>, <nav>, <main>, <article>, <section>, and <footer> provides a logical outline for assistive technologies. Without these, a screen reader user experiences a flat, undifferentiated stream of content, making navigation a nightmare.

I once consulted for a small e-commerce startup in Midtown Atlanta, near Ponce City Market, that had built their entire product catalog using only <div> tags, styled heavily with CSS. The site looked beautiful, but users relying on screen readers couldn’t differentiate product descriptions from navigation links, or even tell where one product ended and another began. We spent weeks refactoring their templates to use proper semantic elements, and their accessibility audit scores, along with user feedback, improved dramatically. It wasn’t just about compliance; they saw a measurable increase in engagement from users with disabilities.

Pro Tip: Always use the most appropriate HTML element for the content’s purpose. For example, use a <button> for an interactive control, not a <div> with a click handler. Use <h1> to <h6> for headings, ensuring they form a logical hierarchy without skipping levels.

Common Mistake: Relying solely on CSS for visual hierarchy and structure. While CSS can make text look like a heading, it doesn’t convey that semantic meaning to assistive technologies. For instance, using <p style="font-size: 24px; font-weight: bold;">Section Title</p> instead of <h2>Section Title</h2> is a classic error.

3. Failing to Meet Color Contrast Standards

Color contrast is more than just aesthetics; it’s fundamental to readability for users with low vision, color blindness, or even those viewing your content in challenging lighting conditions. The Web Content Accessibility Guidelines (WCAG) 2.1 specify minimum contrast ratios. Specifically, level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (18 point or 14 point bold and larger). Level AAA requires even higher ratios, 7:1 for normal text and 4.5:1 for large text.

Pro Tip: Use a reliable contrast checker tool. My go-to is the WebAIM Contrast Checker. It’s free, easy to use, and gives you immediate feedback on whether your foreground and background colors meet WCAG standards. For designers, integrating a contrast checker into your workflow with tools like Figma plugins can save significant rework later.

Common Mistake: Choosing trendy, low-contrast color palettes without verifying accessibility. Light gray text on a white background might look minimalist, but it’s often unreadable for many users. Another issue is relying solely on color to convey information, such as using only red text to indicate an error without an accompanying icon or text description.

Screenshot Description: Imagine a screenshot of the WebAIM Contrast Checker tool. Two color pickers are visible, one for foreground and one for background color. Below them, results show “Ratio: 3.2:1 (Fail)” for AA and AAA, along with specific pass/fail indicators for normal and large text.

4. Overlooking Keyboard Navigation

Many users, including those with motor impairments, visual impairments, or simply those who prefer efficiency, rely entirely on a keyboard to navigate websites and applications. If your interactive elements (buttons, links, form fields, menus, carousels) aren’t fully operable via keyboard, you’re effectively locking out a significant portion of your audience. This means users must be able to tab through elements in a logical order, activate them with the Enter or Space key, and perceive where their focus is currently located (the “focus indicator”).

Pro Tip: After you’ve built a new page or feature, unplug your mouse and try to navigate it using only the Tab key, Enter key, and arrow keys. Can you reach every interactive element? Can you activate every button? Is it clear where you are on the page at all times? If not, you’ve got work to do. Pay close attention to custom components, as these are often the culprits.

Common Mistake: Removing the default browser outline for focused elements (outline: none; in CSS) without providing an equally clear or better visual focus indicator. This is a cardinal sin in accessibility, making keyboard navigation impossible to follow. Another common error is not managing focus when dynamic content appears or disappears, like modal dialogs that don’t trap focus or return it correctly when closed.

Case Study: Last year, I was part of a team at a large financial institution in Buckhead, Atlanta, developing a new online banking portal. During user testing, a participant using only a keyboard couldn’t access the “Pay Bill” button within a modal window. The development team had styled the modal to look sleek, but in doing so, they inadvertently prevented keyboard focus from entering the modal’s content area. We implemented tabindex="0" on interactive elements within the modal and wrote JavaScript to manage focus, ensuring that when the modal opened, focus moved to its first interactive element, and when closed, focus returned to the element that triggered it. This small change, taking less than a day, enabled 100% keyboard operability for that critical feature, avoiding what could have been a major exclusion for their customers.

5. Crafting Vague or Uninformative Link Text

Imagine a screen reader user tabbing through a page. They often hear only the link text itself, out of context. If your links say “Click Here,” “Read More,” or “Learn More,” they provide no useful information about where that link will take the user. This forces them to navigate blindly or listen to the surrounding paragraphs to guess the destination, which is inefficient and frustrating.

Pro Tip: Make sure your link text is descriptive and self-contained. It should make sense even when read out of context. Instead of “Click Here for our Privacy Policy,” use “Read our Privacy Policy.” For external links, it’s good practice to indicate that the link opens in a new tab, for example, by adding (opens in new tab) or using an icon with appropriate alt text.

Common Mistake: Embedding “Click Here” or “Read More” links. Also, using the full URL as link text (e.g., <a href="https://www.example.com/long-page-name-with-parameters">https://www.example.com/long-page-name-with-parameters</a>) is not only unsightly but also cumbersome for screen reader users to listen to.

I find that many developers, myself included sometimes, get so caught up in the visual design and functionality that these seemingly minor text details get overlooked. But accessibility is in the details, isn’t it? It’s the aggregate of these small considerations that creates a truly inclusive experience.

By systematically addressing these common pitfalls, you won’t just meet compliance standards; you’ll build more robust, user-friendly, and inclusive digital experiences for everyone. It’s a win-win, truly.